US4532293A - α-Cyanoacrylate instant adhesive composition containing BTDA or BTA - Google Patents

α-Cyanoacrylate instant adhesive composition containing BTDA or BTA Download PDF

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US4532293A
US4532293A US06/662,430 US66243084A US4532293A US 4532293 A US4532293 A US 4532293A US 66243084 A US66243084 A US 66243084A US 4532293 A US4532293 A US 4532293A
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cyanoacrylate
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hours
heat resistance
instant adhesive
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Takayuki Ikeda
Kazuo Kouhara
Minoru Sasaki
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Alpha Giken KK
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16

Definitions

  • the present invention relates to ⁇ -cyanoacrylate instant adhesive compositions, in particular to ⁇ -cyanoacrylate instant adhesive compositions having remarkably improved heat resistance.
  • ⁇ -cyanoacrylate adhesives have been widely used in not only various fields of industry but also the fields such as ⁇ do it yourself ⁇ and hobby handicrafts at home since they have many advantages, in addition to strong adhesion, such as fast setting time, handiness owing to lower viscosity, nonpollution owing to the discontainment of solvent and prevention of micropores from forming on the bond surface accompanied with the evaporation of solvents.
  • ⁇ -cyanoacrylate instant adhesive compositions according to the present invention is characterized by that benzophenonetetracarboxylic acid or anhydride thereof is incorporated into ⁇ -cyanoacrylate.
  • ⁇ -cyanoacrylate described herein designates ester compounds expressed by the following general formula: ##STR1## wherein a substituent R is an alkyl group, a cycloalkyl group, an alkylene group, an alkyne group, an aralkyl group, a phenyl group, an alcoxyalkyl group, a halogenoalkyl group, a cyanoalkyl group and the like.
  • the examples of said substituent R include a methyl group, an ethyl group, a n-propyl group, a n-butyl group, an isobutyl group, a t-butyl group, an amyl group, an isoamyl group, a n-hexyl group, a n-heptyl group, a n-octyl group, a n-decyl group, a n-undecyl group, a n-dodecyl group, a cetyl group, a vinyl group, an allyl group, a propargyl group, a cyclohexyl group, a phenyl group, a benzyl group, a phenetyl group, a 2-methoxyethyl group, a 2-methoxyisopropyl group, a 2-ethoxyethyl group, a 2-chloroethyl
  • Adhesive compositions according to the present invention contain benzophenonetetracarboxylic acid or anhydride thereof as an indispensable ingredient in addition to the above described ⁇ -cyanoacrylate or the mixtures thereof. It is desirable that said benzophenonetetracarboxylic acid or anhydride thereof is added at a ratio of at least 0.01% by weight, preferably at least 0.1% by weight based on ⁇ -cyanoacrylate. If it is added at a ratio less than 0.01% by weight, a sufficient heat resistance cannot be obtained. Although heat resistance of such compositions is increased with an increase of the quantity of said compound added, the maximum amount of said compound added is up to the solubility limit of said compound to ⁇ -cyanoacrylate. This solubility limit is dependent upon the kind of ⁇ -cyanoacrylate used and the kind of said compound. It is at most several % by weight.
  • Adhesive compositions according to the present invention may contain various kinds of additive for use in ⁇ -cyanoacrylate adhesives including stabilizers, plasticizers, cross-linking agents and coloring matters in addition to said ⁇ -cyanoacrylate and said compound.
  • Stabilizers desribed herein include antioxidants or radical polymerization inhibitors such as sulfur dioxide, sulfonic acids, sultones, boron fluoride, hydroquinone, hydroquinone monomethyl ether, cathecol and pyrogarol. Although they can be added in a wide range of ratio, the addition ratio is generally selected from a range of about 0.0001 to about 5% by weight based on ⁇ cyanoacrylate.
  • Polymers which are miscible to ⁇ -cyanoacrylate such as polymethylmethacrylate, poly- ⁇ -cyanoacrylate and acrylic rubber, are used as thickners. Although the addition ratio of said thickners can be widely changed, it is generally selected from a range of about 0.1 to about 50% by weight based on a ⁇ -cyanoacrylate.
  • plasticizers such as dioctylphthalate, sebacic acid ester and phosphoric acid ester are used as plasticizers for giving the softness and flexibility to a bonded film.
  • Cross-linking agents play a role to improve the impact resistance of a bonded film by changing a linear ⁇ -cyanoacrylate to three dimensional network structure.
  • Cross-linking agents used to this purpose include multifunctional compounds such as alkylenediacrylate, alkylenedimethacrylate, trimethylolpropanetriacrylate and triallylisocyanurate.
  • coloring matters are not required in cases where the compositions according to the present invention are used in the ordinary adhesive applications, they are required in cases where the compositions according to the present invention are used in the special applications, for example for drawing letters or figures instead of paints and colors and used as sealing materials as well as crack-repairing materials. Ordinary oil-soluble dyes and coloring matters can be used in these cases.
  • compositions according to the present invention show remarkably superior heat resistance in comparison with ⁇ -cyanoacrylate without containing benzophenonetetracarboxylic acid or anhydride thereof.
  • tensile shear strength of a composition which is obtained by adding benzophenonetetracarboxylic acid anhydride to isobutyl- ⁇ -cyanoacrylate at a ratio of 0.5% by weight, measured at ordinary temperature after bonding at ordinary temperature followed by heating for 5 hours at 150° C.
  • Adhesive compositions according to the present invention will be described in more detail below with reference to the following examples and comparative examples.
  • test method of tensile shear strength described hereinafter conforms to a method using iron-iron pieces in accordance with "Test method of ⁇ -cyanoacrylate adhesives" provided by Adhesive Industries Association (test methods similar to JIS K 6850).
  • Benzophenonetetracarboxylic acid anhydride is added to various kinds of ⁇ -cyanoacrylate containing sulfur dioxide of 10 ppm and hydroquinone of 300 ppp therein as stabilizers at a ratio of 0 to 0.5% by weight to prepare adhesives.
  • Iron-iron pieces bonded together by means of the resulting adhesives were measured on tensile shear strength after standing still for 24 hours at ordinary temperature.
  • iron-iron pieces bonded together by means of said adhesives were measured on tensile shear strength at ordinary temperature after standing still for 24 hours followed by heating in a thermostatic oven at 150° C. for 1 hour and 5 hours, respectively.
  • Example 2 The results in cases where benzophenonetetracarboxylic acid anhydride and benzophenonetetracarboxylic acid are added (Example 2) are shown in Table 2 and the results in cases where other additives are added (Comparative Example 2) are shown in Table 3.
  • benzophnonetetracarboxylic acid and anhydride thereof can remarkably improve heat resistance of ⁇ -cyanoacrylate in comparison with that of a blank test. Also it is found that the effect of improving heat resistance is remarkably larger in comparison with that of other aromatic polyvalent carboxylic acids or anhydrides thereof.
  • the adhesive compositions according to the present invention can completely meet the requirements by the industrial fields in which heat resistance of the degree of 150° C. is requiired.
  • the present invention can give an effective solution to a problem of heat resistance of ⁇ -cyanoacrylate instant adhesives, whereby being capable of greatly contributing to an adhesive industrial field.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

α-cyanoacrylate instant adhesive compositions obtained by adding benzophenonetetracarboxylic acid or anhydride thereof to α-cyanoacrylate and showing superior heat resistance of the degree of 150° C. with keeping instant adhesive capacity.

Description

TECHNICAL FIELD
The present invention relates to α-cyanoacrylate instant adhesive compositions, in particular to α-cyanoacrylate instant adhesive compositions having remarkably improved heat resistance.
BACKGROUND ART
α-cyanoacrylate adhesives have been widely used in not only various fields of industry but also the fields such as `do it yourself` and hobby handicrafts at home since they have many advantages, in addition to strong adhesion, such as fast setting time, handiness owing to lower viscosity, nonpollution owing to the discontainment of solvent and prevention of micropores from forming on the bond surface accompanied with the evaporation of solvents. On the other hand, it has been indicated that they are inferior in heat resistance. This disadvantage has been serious in the cases which the heat resistance is required, for example in bonding of articles, parts and the like prior to burning coating.
In order to improve such a disadvantage various methods are proposed. For example heat resistance of α-cyanoacrylate is tried to be strong by adding N,N'-substituted bis-maleimide compounds (Japanese Pat. Publication No. 11688/1977), maleic anhydride or derivatives thereof (Japanese Pat. Publication No. 12737/1977), isocyanate compounds or polyisocyanate compounds (Japanese Pat. Publication No. 19418/1979), hydroxyalkyl esters of α,β-unsaturated carboxylic acids or hydroxyhalogenoalkyl esters of α,β-unsaturated carboxylic acids (Japanese Pat. Laying-Open No. 110635/1978) and sulfone compounds and dicarboxylic acid anhydrides (Japanese Pat. Laying-Open No. 66980/1980) thereto, respectively.
However, such additives have been apt to prolong the setting time increasingly with the improvement in heat resistance in general. Since it goes without saying that the fast cure is the greatest characteristic of α-cyanoacrylate adhesives, the prolonged setting time damages the worth as instant adhesives. Although the heat resisting temperature can be increased to about 250° C. at maximum according to the invention disclosed in Japanese Pat. Publication No. 11688/1977 cited at first, it is necessary to turn α-cyanoacrylate adhesives into prepregs or films prior to the use thereof. Therefore, they can no longer be called instant adhesives.
It is an object of the present invention to provide adhesives having remarkably improved heat resistance with holding the high cure speed suitable for instant adhesives.
DISCLOSURE OF THE INVENTION
The inventors found that the following specified compounds were effective as additives giving heat resistance to α-cyanoacrylate adhesives from the investigation of a large number of additives to attain the above described object.
That is to say, α-cyanoacrylate instant adhesive compositions according to the present invention is characterized by that benzophenonetetracarboxylic acid or anhydride thereof is incorporated into α-cyanoacrylate.
α-cyanoacrylate described herein designates ester compounds expressed by the following general formula: ##STR1## wherein a substituent R is an alkyl group, a cycloalkyl group, an alkylene group, an alkyne group, an aralkyl group, a phenyl group, an alcoxyalkyl group, a halogenoalkyl group, a cyanoalkyl group and the like. The examples of said substituent R include a methyl group, an ethyl group, a n-propyl group, a n-butyl group, an isobutyl group, a t-butyl group, an amyl group, an isoamyl group, a n-hexyl group, a n-heptyl group, a n-octyl group, a n-decyl group, a n-undecyl group, a n-dodecyl group, a cetyl group, a vinyl group, an allyl group, a propargyl group, a cyclohexyl group, a phenyl group, a benzyl group, a phenetyl group, a 2-methoxyethyl group, a 2-methoxyisopropyl group, a 2-ethoxyethyl group, a 2-chloroethyl group, a 2-trifluoroethyl group, a hexafluoroisobutyl group, a 2-cyanoethyl group and the like.
Adhesive compositions according to the present invention contain benzophenonetetracarboxylic acid or anhydride thereof as an indispensable ingredient in addition to the above described α-cyanoacrylate or the mixtures thereof. It is desirable that said benzophenonetetracarboxylic acid or anhydride thereof is added at a ratio of at least 0.01% by weight, preferably at least 0.1% by weight based on α-cyanoacrylate. If it is added at a ratio less than 0.01% by weight, a sufficient heat resistance cannot be obtained. Although heat resistance of such compositions is increased with an increase of the quantity of said compound added, the maximum amount of said compound added is up to the solubility limit of said compound to α-cyanoacrylate. This solubility limit is dependent upon the kind of α-cyanoacrylate used and the kind of said compound. It is at most several % by weight.
Adhesive compositions according to the present invention may contain various kinds of additive for use in α-cyanoacrylate adhesives including stabilizers, plasticizers, cross-linking agents and coloring matters in addition to said α-cyanoacrylate and said compound.
Stabilizers desribed herein include antioxidants or radical polymerization inhibitors such as sulfur dioxide, sulfonic acids, sultones, boron fluoride, hydroquinone, hydroquinone monomethyl ether, cathecol and pyrogarol. Although they can be added in a wide range of ratio, the addition ratio is generally selected from a range of about 0.0001 to about 5% by weight based on αcyanoacrylate.
Polymers, which are miscible to α-cyanoacrylate such as polymethylmethacrylate, poly-α-cyanoacrylate and acrylic rubber, are used as thickners. Although the addition ratio of said thickners can be widely changed, it is generally selected from a range of about 0.1 to about 50% by weight based on a α-cyanoacrylate.
Ordinary plasticizers such as dioctylphthalate, sebacic acid ester and phosphoric acid ester are used as plasticizers for giving the softness and flexibility to a bonded film.
Cross-linking agents play a role to improve the impact resistance of a bonded film by changing a linear α-cyanoacrylate to three dimensional network structure. Cross-linking agents used to this purpose include multifunctional compounds such as alkylenediacrylate, alkylenedimethacrylate, trimethylolpropanetriacrylate and triallylisocyanurate.
Although coloring matters are not required in cases where the compositions according to the present invention are used in the ordinary adhesive applications, they are required in cases where the compositions according to the present invention are used in the special applications, for example for drawing letters or figures instead of paints and colors and used as sealing materials as well as crack-repairing materials. Ordinary oil-soluble dyes and coloring matters can be used in these cases.
The compositions according to the present invention show remarkably superior heat resistance in comparison with α-cyanoacrylate without containing benzophenonetetracarboxylic acid or anhydride thereof. For example, although tensile shear strength of a composition, which is obtained by adding benzophenonetetracarboxylic acid anhydride to isobutyl-α-cyanoacrylate at a ratio of 0.5% by weight, measured at ordinary temperature after bonding at ordinary temperature followed by heating for 5 hours at 150° C. (133.5 Kg/cm2) is increased rather than that measured after merely bonding at ordinary temperature (122.3 kg/cm2), tensile shear strength of isobutyl α-cyanoacrylate without containing benzophenonetetracarboxylic acid anhydride measured at ordinary temperature after bonding at ordinary temperature followed by heating for 5 hours at 150° C. (36.9 kg/cm2) is reduced to the value about 1/4 times that measured after merely bonding at ordinary temperature (149.7 kg/cm2). The superiority of a composition according to the present invention is obvious since such a heating condition of 150° C.×5 hours is more severe than the ordinary test condition of heat resistance for α-cyanoacrylate adhesives.
In addition, although it is disclosed in Japanese Pat. Publication No. 37263/1978 that certain kinds of aromatic polyvalent carboxylic acids or anhydrides thereof such as isophthalic acid, benzenepentacarboxylic acid, diphenic acid and trimellitic acid are added to α-cyanoacrylate in order to improve impact resistance, benzophenonetetracarboxylic acid or anhydride thereof is not described in this reference at all and the additives described in this reference cannot show heat resistance as superior as that of the compositions according to the present invention. Therefore, it can be said that benzophenonetetracarboxylic acid or anhydride thereof is a singular additive for giving α-cyanoacrylate heat resistance.
PREFERRED EMBODIMENTS OF THE INVENTION
Adhesive compositions according to the present invention will be described in more detail below with reference to the following examples and comparative examples.
A test method of tensile shear strength described hereinafter conforms to a method using iron-iron pieces in accordance with "Test method of α-cyanoacrylate adhesives" provided by Adhesive Industries Association (test methods similar to JIS K 6850).
EXAMPLE 1 AND COMPARATIVE EXAMPLE 1
Benzophenonetetracarboxylic acid anhydride is added to various kinds of α-cyanoacrylate containing sulfur dioxide of 10 ppm and hydroquinone of 300 ppp therein as stabilizers at a ratio of 0 to 0.5% by weight to prepare adhesives. Iron-iron pieces bonded together by means of the resulting adhesives were measured on tensile shear strength after standing still for 24 hours at ordinary temperature. In addition, iron-iron pieces bonded together by means of said adhesives were measured on tensile shear strength at ordinary temperature after standing still for 24 hours followed by heating in a thermostatic oven at 150° C. for 1 hour and 5 hours, respectively.
The results are shown in Table 1.
              TABLE 1                                                     
______________________________________                                    
Addition             Kind of α-cyanoacrylate (kind of               
quantity             substituent R)                                       
(%)    Heating condition                                                  
                     R1      R2    R3    R4                               
______________________________________                                    
*0.0   Ordinary      171.1   175.6 149.7 71.4                             
       temperature                                                        
       150° C. × 1 hour                                      
                     22.2    35.1  17.1  53.4                             
       150° C. × 5 hours                                     
                     11.9    28.1  36.9  30.5                             
0.1    Ordinary      222.2   171.0 169.8 153.9                            
       temperature                                                        
       150° C. × 1 hour                                      
                     40.3    94.9  87.8  126.1                            
       150° C. × 5 hours                                     
                     31.5    32.3  62.9  62.6                             
0.5    Ordinary      225.2   159.3 122.3 173.4                            
       temperature                                                        
       150° C. × 1 hour                                      
                     59.8    126.6 165.3 147.5                            
       150° C. × 5 hours                                     
                     40.3    41.7  133.3 74.2                             
______________________________________                                    
 Note 1 Mark * designates a blank test.                                   
 Note 2 The measured values of tensile shear strength are expressed with  
 kg/cm.sup.2 as the unit.                                                 
 Note 3 In Table 1, R1 designates a methyl group, R2 designating an       
 isopropyl group, R3 designating an isobutyl group, and R4 designating a  
 2methoxyisopropyl group.
EXAMPLE 2 AND COMPARATIVE EXAMPLE 2
Various kinds of additive were added to adhesive compositions obtained in the same manner as in Example 1 except that ethyl α-cyanoacrylate is used for a α-cyanoacrylate at a ratio of 0 to 0.5% by weight as heat-resistance giving agents. Iron-iron pieces bonded together be means of the resulting adhesives containing said additives therein were measured on tensile shear strength after standing still for 24 hours at ordinary temperature. In addition, said iron-iron pieces were measured on tensile shear strength at ordinary temperature after standing still for 24 hours at ordinary temperature followed by heating at 150° C. for 1 hour and 5 hours, respectively.
The results in cases where benzophenonetetracarboxylic acid anhydride and benzophenonetetracarboxylic acid are added (Example 2) are shown in Table 2 and the results in cases where other additives are added (Comparative Example 2) are shown in Table 3.
              TABLE 2                                                     
______________________________________                                    
Addition                                                                  
quantity                  Kind of additives                               
(%)        Heating condition                                              
                          A1     A2                                       
______________________________________                                    
* 0.0      Ordinary temp. 127.2                                           
           150° C. × 1 hour                                  
                          59.6                                            
           150° C. × 5 hours                                 
                          48.7                                            
0.1        Ordinary temp. 174.5  217.3                                    
           150° C. × 1 hours                                 
                           98.7   95.5                                    
           150° C. × 5 hours                                 
                           77.6   67.5                                    
0.2        Ordinary temp. --     191.5                                    
           150° C. × 1 hour                                  
                          --     129.8                                    
           150° C. × 5 hours                                 
                          --     107.5                                    
0.5        Ordinary temp. 241.3  --                                       
           150° C. × 1 hour                                  
                          136.1  --                                       
           150° C. × 5 hours                                 
                          138.0  --                                       
______________________________________                                    
 Note 1 Mark * designates a blank test.                                   
 Note 2 The measured values of tensile shear strength are expressed with  
 kg/cm.sup.2 as the unit.                                                 
 Note 3 In Table 2, A1 designates benzophenonetetracarboxylic acid        
 anhydride and A2 designates benzophenonetetracarboxylic acid.            

              TABLE 3                                                     
______________________________________                                    
Addition                                                                  
quantity              Kind of additives                                   
(%)    Heating condition                                                  
                      B1     B2    B3    B4                               
______________________________________                                    
0.1    Ordinary temperature                                               
                      99.2   210.3 136.8 112.2                            
       150° C. × 1 hour                                      
                      40.1   88.0  65.3  64.4                             
       150° C. × 5 hours                                     
                      42.5   51.0  58.8  41.6                             
0.2    Ordinary temperature                                               
                      --     207.9 --    --                               
       150° C. × 1 hour                                      
                      --     64.1  --    --                               
       150° C. × 5 hours                                     
                      --     52.0  --    --                               
0.5    Ordinary temperature                                               
                      81.0   --    118.1 213.6                            
       150° C. × 1 hour                                      
                      40.3   --    48.2  76.5                             
       150° C. × 5 hours                                     
                      40.0   --    40.5  62.5                             
______________________________________                                    
 Note 1 The measured values are expressed with kg/cm.sup.2 as the unit.   
 Note 2 In Table 3, B1 designates isophthalic acid, B2 designating        
 benzenepentacarboxylic acid, B3 designating diphenic acid, and B4        
 designating trimellitic acid anhydride.
As obvious also from the above described results of Example 1 and Example 2, benzophnonetetracarboxylic acid and anhydride thereof can remarkably improve heat resistance of α-cyanoacrylate in comparison with that of a blank test. Also it is found that the effect of improving heat resistance is remarkably larger in comparison with that of other aromatic polyvalent carboxylic acids or anhydrides thereof.
Since the heating condition of 150° C.×1 hour or 150° C.×5 hours adopted in the above described tests is much more severe than the practical burning condition, it can be said that the adhesive compositions according to the present invention can completely meet the requirements by the industrial fields in which heat resistance of the degree of 150° C. is requiired.
Industrial Applicability
As above described in detail, the present invention can give an effective solution to a problem of heat resistance of α-cyanoacrylate instant adhesives, whereby being capable of greatly contributing to an adhesive industrial field.

Claims (1)

What is claimed is:
1. α-cyanoacrylate instant adhesive compositions, characterized by that benzophenonetetracarboxylic acid or anhydride thereof is incorporated into α-cyanoacrylate.
US06/662,430 1983-02-09 1984-02-04 α-Cyanoacrylate instant adhesive composition containing BTDA or BTA Expired - Lifetime US4532293A (en)

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JP58-21293 1983-02-09
JP58021293A JPS59147067A (en) 1983-02-09 1983-02-09 Heat-resistant instantaneous adhesive composition composed of alpha-cyanoacrylate

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US5066743A (en) * 1989-03-27 1991-11-19 Loctite Corporation Two-part composition comprising a cyanoacrylate adhesive and a primer comprising a tertiary ammonium carboxylate compound
US5288794A (en) * 1992-10-23 1994-02-22 Loctite Corporation Cyanoacrylate adhesives with improved cured thermal properties utilizing substituted aromatic additive
US5306752A (en) * 1992-10-09 1994-04-26 Loctite Corporation Cyanoacrylate adhesives utilizing quinoid compound polymer stabilizer
US5328944A (en) * 1992-07-14 1994-07-12 Loctite Corporation Cyanoacrylate adhesives with improved cured thermal properties
US5424343A (en) * 1992-10-08 1995-06-13 Loctite Corporation Thermally resistant cyanoacrylates employing substituted napthasultone additive
US6093780A (en) * 1998-10-02 2000-07-25 Loctite Corporation Cyanoacrylate adhesive compositions with improved cured thermal properties
WO2013011421A1 (en) 2011-07-15 2013-01-24 Henkel Ireland Limited Cyanoacrylate compositions
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US10947418B2 (en) 2015-11-06 2021-03-16 Henkel IP & Holding GmbH Cyanoacrylate compositions
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JPH0812946A (en) * 1994-06-28 1996-01-16 Taoka Chem Co Ltd Modified alpha-cyanoacrylate adhesive composition
BR9711198A (en) 1996-08-16 1999-08-17 Loctite Ireland Ltd Adhesive cyanoacrylate compositions for glass junction
PT2511355E (en) 2011-04-12 2014-01-28 Henkel Ireland Ltd Cyanoacrylate adhesive with improved water resistance
KR101840906B1 (en) * 2012-01-25 2018-03-21 헨켈 아이피 앤드 홀딩 게엠베하 Cyanoacrylate compositions
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US5328944A (en) * 1992-07-14 1994-07-12 Loctite Corporation Cyanoacrylate adhesives with improved cured thermal properties
US5424343A (en) * 1992-10-08 1995-06-13 Loctite Corporation Thermally resistant cyanoacrylates employing substituted napthasultone additive
US5306752A (en) * 1992-10-09 1994-04-26 Loctite Corporation Cyanoacrylate adhesives utilizing quinoid compound polymer stabilizer
US5288794A (en) * 1992-10-23 1994-02-22 Loctite Corporation Cyanoacrylate adhesives with improved cured thermal properties utilizing substituted aromatic additive
US6093780A (en) * 1998-10-02 2000-07-25 Loctite Corporation Cyanoacrylate adhesive compositions with improved cured thermal properties
WO2013011421A1 (en) 2011-07-15 2013-01-24 Henkel Ireland Limited Cyanoacrylate compositions
CN104284955A (en) * 2011-07-15 2015-01-14 汉高知识产权控股有限责任公司 Cyanoacrylate compositions
US9120957B2 (en) 2011-07-15 2015-09-01 Henkel IP & Holding GmbH Cyanoacrylate compositions
US9657120B1 (en) 2011-09-06 2017-05-23 Henkel IP & Holding GmbH Cyanoacrylate compositions
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US9783714B2 (en) 2013-03-15 2017-10-10 Henkel IP & Holding GmbH Cyanoacrylate compositions
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US10100235B2 (en) 2016-05-23 2018-10-16 Henkel IP & Holding GmbH Two-part cyanoacrylate curable adhesive system
US11555135B2 (en) 2017-05-05 2023-01-17 Henkel Ag & Co. Kgaa Cyanoacrylate compositions
US11299652B2 (en) 2017-10-27 2022-04-12 Henkel Ag & Co. Kgaa Cyanoacrylate compositions
WO2020035579A1 (en) 2018-08-16 2020-02-20 Henkel IP & Holding GmbH Cyanoacrylate compositions
US12065554B2 (en) 2018-08-16 2024-08-20 Henkel Ag & Co. Kgaa Cyanoacrylate compositions
WO2021260160A1 (en) 2020-06-26 2021-12-30 Henkel IP & Holding GmbH Cyanoacrylate compositions
CN112063353A (en) * 2020-08-13 2020-12-11 广州市白云化工实业有限公司 Polyurethane hot melt adhesive and preparation method thereof
CN112063353B (en) * 2020-08-13 2022-09-09 广州市白云化工实业有限公司 Polyurethane hot melt adhesive and preparation method thereof

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WO1984003097A1 (en) 1984-08-16
EP0137849A4 (en) 1985-03-06
EP0137849A1 (en) 1985-04-24

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